Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10351930 | Silver recovery by ion exchange | Kari Valkama, Mikko Tyster, Sami Virolainen | 2019-07-16 |
| 10221493 | Method for recovery of copper and zinc | Erkki Paatero, Kari Hietala | 2019-03-05 |
| 10144989 | Recovery of gold from solution | — | 2018-12-04 |
| 10060007 | Method of preparing a gold-containing solution and process arrangement for recovering gold and silver | Ville Miettinen, Riina Ahtiainen, Kari Valkama, Erkki Paatero, Kari Hietala | 2018-08-28 |
| 9322079 | Method for recovering copper from a copper sulphide ore | Stig-Erik Hultholm, Leif Rosenback | 2016-04-26 |
| 8926730 | Method for recovering gold by solvent extraction | Erkki Paatero | 2015-01-06 |